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Senior ML Engineer - Offline Team

Helsinki💼 Full-time🗓 2026-05-11 → 2026-09-25

Core

Build and maintain ML training infrastructure powering ad-targeting models from data preprocessing through model deployment to production monitoring.

Role type

Senior IC machine-learning engineer (infrastructure & pipelines)

Builds

ML training infrastructure, data pipelines, and model serving systems for ad-targeting

Domain

Mobile gaming, advertising technology, machine learning

Deliverable

production ML models

Required skills

Python, PyTorch, scikit-learn, LightGBM, AWS, ML pipeline engineering, GPU workload orchestration, experiment tracking, model serving, performance optimization

Preferred skills

Model serving infrastructure (real-time/batch), feature store knowledge, training-serving skew mitigation

Technologies

Python, PyTorch, scikit-learn, LightGBM, DBT, Spark, MLflow, Prometheus, Terraform, Airflow, Kubernetes, Amazon Web Services

Responsibilities

Architect end-to-end ML projects from ideation to production; Build and optimize data and ML pipelines for performance and cost; Enable data scientists with reusable pipeline components; Contribute to deep learning development and custom training loops; Maintain reproducibility and consistency across the ML lifecycle; Collaborate on scalability, reliability, and CI/CD migrations; Mentor team members and share engineering knowledge

Seniority

Senior, hands-on IC

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